Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods
ObjectiveAs tip vortex cavitation (TVC) causes noise radiation and vibration, it is necessary to understand how to predict and control its development, and understand its mechanism in order to suppress it, especially in the field of ship propellers and other rotating machinery. MethodFocusing on an...
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| Format: | Article |
| Language: | English |
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Editorial Office of Chinese Journal of Ship Research
2023-08-01
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| Series: | Zhongguo Jianchuan Yanjiu |
| Subjects: | |
| Online Access: | http://www.ship-research.com/en/article/doi/10.19693/j.issn.1673-3185.02868 |
| _version_ | 1797692563136708608 |
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| author | Kang LIU Liushuai CAO Decheng WAN |
| author_facet | Kang LIU Liushuai CAO Decheng WAN |
| author_sort | Kang LIU |
| collection | DOAJ |
| description | ObjectiveAs tip vortex cavitation (TVC) causes noise radiation and vibration, it is necessary to understand how to predict and control its development, and understand its mechanism in order to suppress it, especially in the field of ship propellers and other rotating machinery. MethodFocusing on an elliptical hydrofoil with an NACA 0012 cross-section, this study uses the Improved Delayed Detached Eddy Simulation (IDDES) turbulence modeling method and Schnerr-Sauer cavitation model to simulate TVC on the hydrofoil and analyze its behavioral characteristics under wet flow and cavitation flow conditions. After that, two active water injection methods, side injection and top injection, are introduced into the simulation to reduce and suppress cavitation inception respectively. ResultsTaking the cavity volume of the tip vortex as the criterion for cavitation suppression, compared with the condition without water injection, top injection can inhibit cavitation by 8.09%. Moreover, under the condition of side injection, the effect of the injecting flow on the cavitation is more obvious, reaching 10.47%. The results show that both top and side injection can effectively suppress TVC. ConclusionTop injection can change the flow direction and speed of the tip vortex incident flow, and increase the dissipation term of the turbulent kinetic energy; while in side injection, the energy it carries acts directly on the vortex structure of the hydrofoil, destroying the vortex and greatly suppressing the generation of cavitation. |
| first_indexed | 2024-03-12T02:29:25Z |
| format | Article |
| id | doaj.art-e2dd7f39b85e46b29bff2a22a1e50418 |
| institution | Directory Open Access Journal |
| issn | 1673-3185 |
| language | English |
| last_indexed | 2024-03-12T02:29:25Z |
| publishDate | 2023-08-01 |
| publisher | Editorial Office of Chinese Journal of Ship Research |
| record_format | Article |
| series | Zhongguo Jianchuan Yanjiu |
| spelling | doaj.art-e2dd7f39b85e46b29bff2a22a1e504182023-09-05T09:18:25ZengEditorial Office of Chinese Journal of Ship ResearchZhongguo Jianchuan Yanjiu1673-31852023-08-0118417518510.19693/j.issn.1673-3185.02868ZG2868Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methodsKang LIU0Liushuai CAO1Decheng WAN2Computational Marine Hydrodynamics Lab, Shanghai Jiao Tong University, Shanghai 200240, ChinaComputational Marine Hydrodynamics Lab, Shanghai Jiao Tong University, Shanghai 200240, ChinaComputational Marine Hydrodynamics Lab, Shanghai Jiao Tong University, Shanghai 200240, ChinaObjectiveAs tip vortex cavitation (TVC) causes noise radiation and vibration, it is necessary to understand how to predict and control its development, and understand its mechanism in order to suppress it, especially in the field of ship propellers and other rotating machinery. MethodFocusing on an elliptical hydrofoil with an NACA 0012 cross-section, this study uses the Improved Delayed Detached Eddy Simulation (IDDES) turbulence modeling method and Schnerr-Sauer cavitation model to simulate TVC on the hydrofoil and analyze its behavioral characteristics under wet flow and cavitation flow conditions. After that, two active water injection methods, side injection and top injection, are introduced into the simulation to reduce and suppress cavitation inception respectively. ResultsTaking the cavity volume of the tip vortex as the criterion for cavitation suppression, compared with the condition without water injection, top injection can inhibit cavitation by 8.09%. Moreover, under the condition of side injection, the effect of the injecting flow on the cavitation is more obvious, reaching 10.47%. The results show that both top and side injection can effectively suppress TVC. ConclusionTop injection can change the flow direction and speed of the tip vortex incident flow, and increase the dissipation term of the turbulent kinetic energy; while in side injection, the energy it carries acts directly on the vortex structure of the hydrofoil, destroying the vortex and greatly suppressing the generation of cavitation.http://www.ship-research.com/en/article/doi/10.19693/j.issn.1673-3185.02868elliptical hydrofoilactive water injectiontip vortex cavitationiddesschnerr-sauer |
| spellingShingle | Kang LIU Liushuai CAO Decheng WAN Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods Zhongguo Jianchuan Yanjiu elliptical hydrofoil active water injection tip vortex cavitation iddes schnerr-sauer |
| title | Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods |
| title_full | Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods |
| title_fullStr | Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods |
| title_full_unstemmed | Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods |
| title_short | Suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods |
| title_sort | suppression of tip vortex cavitation of elliptical hydrofoil based on active water injection methods |
| topic | elliptical hydrofoil active water injection tip vortex cavitation iddes schnerr-sauer |
| url | http://www.ship-research.com/en/article/doi/10.19693/j.issn.1673-3185.02868 |
| work_keys_str_mv | AT kangliu suppressionoftipvortexcavitationofellipticalhydrofoilbasedonactivewaterinjectionmethods AT liushuaicao suppressionoftipvortexcavitationofellipticalhydrofoilbasedonactivewaterinjectionmethods AT dechengwan suppressionoftipvortexcavitationofellipticalhydrofoilbasedonactivewaterinjectionmethods |